Electric alarm for cane-feeders



(No Model.) 1

A. P. SLANGERUP.

ELECTRIC ALARM FOR CANE FEEDERS Patented Jan. 2, 1894.

[NVENTOR WITNESSES z NAYlONAL umoeuvnma COMPANY,

WASHINGTON. u. c.

UNITED STATES PATENT OFFICE.

AUGUST F. SLANGERUP, OF NEIV ORLEANS, LOUISIANA.

ELECTRIC ALARM FOR CANE-FEEDERS.

SPECIFICATION forming part of Letters Patent No. 511,866, dated January2, 1894.

Application filed April 28, 1893. Serial No.4'72,275- (No model.)

To aZZ whom it may concern.-

Be it known that I, AUGUST FERDINAND SLANGERUP, a subject of the King ofDenmark, residing at New Orleans, in the parish of Orleans and State ofLouisiana, have invented certain new and useful Improvements in ElectricAlarms for Cane-Feeders; and I do declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

My invention relates to an improvement in electric alarms for canefeeders and its novelty will be fully understood from the followingdescription and claim, when taken in connection with the annexeddrawings.

The objects of my invention are to transmit a signal electrically andmagnetically and thus prevent an accident to sugar mills or othermachinery by giving a signal in an automatic manner. This I accomplishby placing a magnet bar in close proximity to an ordinary cane carrier,and should a piece of metal be upon the carrier, the magnetic bar willbe attracted toward the piece of metal upon the carrier, and when thusattracted, will make or break a circuit so as to ring a bell or cause analarm. I attain these objects by the mechanism illustrated in theaccompanying drawings, in which Figure l is a side view of cane carrierwith circuit closed. Fig. 2 shows side view of cane carrier with circuitbroken.

Similarletters refer to similar parts throughout both views.

In the drawings A shows a metal disk, having a slot B in same forengaging a hook or hanger O on side of carrier J. The rods 0 areattached to the disk A by any suitable means. On one end of same is amagnet D, while on the opposite end is a counter-balance weight E. Theserods are placed in a horizontal position. I also attach a third rod tothe disk A in a vertical position,the latter rod being provided with aweight F.

G is a metal point which is attached to disk A, and which forms acontact with a push button H,-said button being so placed as to form acontact with electric wires 1, which are connected to a bell andbatteries not shown. The cane carrier is provided with slats L and linksK.

M shows cane upon carrier in transit to rollers, not shown, and Ndesignates a piece of metal upon carrier mingled with cane.

In practice the carrier is placed In motion in the usual manner and thecane dumped thereon. The apparatus is placed In close proximity to theunder portion of the carrier, and should a piece of metal be dumped uponthe carrier with the cane, the magnetD is attracted in the direction ofthe metal upon the carrier, and the point G is caused to 1mpinge orpress the button H, thus causing a bell to ring. By this signal it willbe known that there is a piece of metal upon the carrier, and therollers can be stopped in time to prevent an accident. It is a wellknown fact that magnetic influence cannot beinsulated, while electricalinfluence can be insulated, and thus it will be seen that the magnet Dwill be attracted by any metal that may be upon the carrier.

A striking advantage of my invention 1s 1ts economical construction, andthe ease with which the same may be operated, insuring a safe alarm forall pieces of metal, such as bolts, pins, clevises, or other metallicmaterial which may be thrown upon the carrier, and which, if notdetected, causes the rollers of a sugar mill to break down, andfrequently subjects the entire crop of a sugar planter to destruction.

Having described my invention and the manner in which the same is or maybe operated, I would say in conclusion that I do not limit myself to theprecise details shown In illustration, as the same may be varied to someextent; but

lVhat I claim, and desire to secure by Letters Patent, is

The combination, of the endless carrier, the movable magnet mounted injuxtaposition to the carrier, and the circuit changer operated throughthe movement of the magnet, substantially as and for the purpose setforth.

In testimony whereof I afdx my signature In presence of two witnesses.

AUGUST F. SLANGERUP.

Witnesses:

WILL J. GIBBENs,

WILLIAM GOLDING.

